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The Subaru Seminar is usually held in Room 104 of the Hilo Base Facility, adjacent to the main lobby. Everyone is welcome to attend. If you are interested in giving a seminar, please contact Subaru seminar organizers (Tomonori Usuda, Kumiko S. Usuda, Masayuki Akiyama) by email : sseminar_at_subaru.naoj.org (please change"_at" to @).

February 26, Monday at 11:00 am

" Relativistic Broad Iron K-lines of AGN: Probing the nearest surrounding of black holes "

Yasuo Tanaka

(Max Planck Institute for Extraterrestrial Physics)


X-rays from AGN come from the inner accretion disk. In their spectra, the iron K-lines (rest frame energy of 6.4 keV) with a broad low-energy tail are believed to manifest the strong relativistic effects that are unique to the nearest surrounding of the central black holes. Following the discovery with ASCA, such broad iron lines have been found/confirmed from many AGN with Chandra, XMM-Newton and Suzaku. More complex spectral and variability features have been discovered, and interpretations are developed. I shall give a status report of the recent studies and future prospects of the subject.


Seminars are also held at JAC, CFHT, and IfA.



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